Abstract: Disclosed herein are an apparatus and method for providing sensor data in a sensor device based on a blockchain. A method for providing sensor data in a sensor device based on a blockchain may include creating a device record using encrypted device identification information, registering the device record in the blockchain, creating an event record using event information collected from a sensor, registering the header of the event record, including information about a link to the device record, in the blockchain, and distributing the body of the event record, the body being linked to the header of the event record.

Abstract: An apparatus for determining a degradation state of a battery includes a sensing unit configured to output sensing information indicating a voltage and a current of the battery and a control unit. The control unit determines a degradation ratio of the battery and a measured Q-dV/dQ curve based on the sensing information. The measured Q-dV/dQ curve shows a relationship between a remaining capacity of the battery and a ratio of a change in voltage of the battery to a change in remaining capacity of the battery. The control unit detects a plurality of feature points from the measured Q-dV/dQ curve. The control unit determines a positive electrode degradation ratio, a negative electrode degradation ratio and a lithium ion loss ratio of the battery based on the degradation ratio, the plurality of feature points, a predetermined positive electrode Q-dV/dQ curve and a predetermined negative electrode Q-dV/dQ curve.

Abstract: A secondary battery in which an internal gas is easily discharged to improve safety. The secondary battery includes an electrode assembly, a case accommodating the electrode assembly and including an opening, a plate coupled to the opening of the case and including a vent hole and a safety vent in the vent hole, and a cover coupled to the plate. The plate includes a number of gas discharge holes outside of the vent hole.

Abstract: The present disclosure relates to a battery management apparatus and method, and more particularly, to a battery management apparatus and method using non-destructive resistance analysis for analyzing the change of resistance of a battery cell. According to an embodiment of the present disclosure, even if the EIS (Electrochemical Impedance Spectroscopy) analysis is not used, the resistance change rate of the battery cell may be calculated non-destructively using the QV curve and the Q-dV/dQ curve of the battery cell.

Abstract: A method for managing security keys for an I/O device may include loading a first security key from a primary memory to a security engine, performing a first data transfer operation between a host and the I/O device using the first security key with the security engine, loading a second security key from a secondary memory to the security engine, and performing a second data transfer operation between the host and the I/O device using the second security key with the security engine. The method may further include storing the first security key in the primary memory based on a frequency of use of the first security key. The frequency of use of the first security key may be determined by a pattern of transfers between the host and the I/O device.

Abstract: The electrode comprises: a plurality of unit electrodes formed by connecting a plurality of electrodes made of an electrode mixture having a solid shape to each other; a separator interposed between the plurality of unit electrodes; and an electrode tab attached to the unit electrode, wherein the electrode tab comprises first and second electrode tabs, which are respectively attached to the unit electrodes and have different specific resistance.

Abstract: Inventive aspects include a device including storage media. The device includes a PMU, and a controller communicatively coupled to the PMU. The PMU determines that an operating power of the device exceeds a threshold, and transmits a signal to the controller to trigger a power reduction operation. The controller throttles one or more operations until the operating power goes below the threshold. Some embodiments include a method for controlling performance of a storage device. The method includes measuring, by a PMU, a power consumption associated with a storage device. The method includes determining, by the PMU, whether the power consumption is greater than a threshold. In response, the method may include setting a performance throttle. The method may include determining, by the PMU, whether the power consumption is less than the threshold. In response, the method may include releasing the performance throttle.

Abstract: An appliance is described. A write engine may process a write request from an application to write a first data into a memory. The write request may including the first data and an address. A compression engine may compress the first data to produce a first compressed data. A write module may store the first compressed data in the memory. The first data may be a first part of a page that may further include a second data as a second part. The first compressed data may be a first part of a compressed page that may further include a second compressed data as a second part.

Abstract: A rechargeable battery module includes: a pair of end plates located at both ends in a first direction in which a plurality of battery cells are stacked; and a pair of side plates located at both sides in a second direction crossing the first direction to connect the pair of end plates to each other, and the side plates include: a metal plate having rigidity; an insulating part integrally molded to the metal plate; and a rib protruding between adjacent battery cells of the plurality of battery cells in the insulating portion to support lateral surfaces of the adjacent battery cells.

Abstract: Disclosed are an apparatus and a method for Internet of Things (IoT) device security. The method includes unifying a port in a first IoT device for communication, receiving, by the first IoT device, a packet from a second IoT device through the port, identifying whether the packet in the first IoT device is in a preset packet form, verifying content of the packet in the first IoT device when the packet is in the preset packet form, and opening the port for providing a service in the first IoT device when the verifying of the packet content is successful.

Abstract: A method of a memory device is provided. The method includes identifying a tag address of a tag memory based, at least partially, on a source index; accessing a cache storage address corresponding to the tag address; comparing tag memory content and at least part of the source index to identify whether a match exists or whether a conflict exists; and in response to identifying whether the match exists or whether the conflict exists, obtaining information from the cache storage address.

Abstract: A storage device including a memory interface chip. In some embodiments, the storage device includes: a controller integrated circuit; a first memory die; and a first converter integrated circuit, the first converter integrated circuit having a first external interface and a second external interface, the first external interface being a serial interface, the first external interface being connected to the controller integrated circuit, and the second external interface being a memory interface connecting the first converter integrated circuit to the first memory die.

Abstract: A battery management apparatus is configured to diagnose a state of a battery cell based on a capacity-voltage differential profile. Specifically, the battery management apparatus diagnoses a state of the battery cell according to a change pattern of a peak associated with a positive electrode reaction area and a peak associated with an available lithium loss in the capacity-voltage differential profile. The state of the battery cell may be diagnosed in real time even while the battery cell is in operation. In addition, it is possible to independently diagnose whether the positive electrode reaction area of the battery cell is reduced and whether available lithium is lost.

Abstract: A method for temperature control. In some embodiments, the method includes sensing a first temperature of an electronic device, determining that the first temperature exceeds a first threshold, and increasing a power supplied to a thermoelectric cooler thermally connected to the electronic device. The increasing of the power may include increasing the power in response to determining that the first temperature exceeds the first threshold.

Abstract: A method for controlling a battery of an electric vehicle (EV) for trading includes collecting, by a battery management system (BMS), a usage history related to charging and discharging of the battery, determining a level of the battery based on the usage history, storing a grade of the battery as a reuse grade in a memory, in response to the level being determined to be a level 1, and changing the reuse grade stored in the memory to a recycle grade, in response to the level being determined to be a level 2.

Abstract: An apparatus for diagnosing a degree of degradation of a battery includes a measuring unit configured to measure a voltage of each of a plurality of battery cells in each of a plurality of cycles where charging and discharging is performed and output voltage information about the plurality of measured voltages, and a control unit configured to receive the plurality of voltage information, calculate a voltage deviation of each cycle for each battery cell based on a reference voltage of each of the plurality of battery cells, select a cycle section satisfying a predetermined condition for each of the plurality of battery cells based on the calculated voltage deviation, calculate a voltage deviation change rate corresponding to each of the plurality of selected cycle sections, and diagnose a relative degree of degradation of the plurality of battery cells based on the plurality of calculated voltage deviation change rates.

Abstract: An apparatus and method for diagnosing a state of a battery in various aspects based on a differential profile respectively obtained in a situation where the battery is charged and discharged. Since the state of the battery is diagnosed by considering both the first differential profile related to the charging of the battery and the second differential profile related to the discharging of the battery, there is an advantage of diagnosing the state of the battery more accurately.

Abstract: A battery diagnosing apparatus includes a measuring unit configured to measure a current, a voltage and an OCV of a battery a resistance estimating unit configured to estimate a resistance of the battery based on the current and the voltage measured by the measuring unit and a control unit configured to calculate a voltage deviation for a criterion OCV set to correspond to the battery and the OCV measured by the measuring unit, calculate a resistance deviation for a criterion resistance set to correspond to the battery and the resistance estimated by the resistance estimating unit, and diagnose a state of the battery based on a voltage increase/decrease pattern for the voltage deviation and a resistance increase/decrease pattern for the resistance deviation.

Abstract: A method of a memory device is provided. The method includes generating, by a controller of the memory device, a hashed index by hashing a source index comprising a namespace identification (NSID) and a keytag with a hash function; accessing, by the controller, a first storage address corresponding to the hashed index; comparing, by the controller, a tag portion corresponding to the first storage address with the source index to identify whether a conflict exists; and in response to identifying whether the conflict exists, obtaining, by the controller, information from the first storage address.

Abstract: A battery diagnosing apparatus according to an embodiment includes a measuring unit configured to measure an open circuit voltage (OCV) of a battery after charging of the battery is finished and measure a resistance of the battery while the battery is discharged for a predetermined time after the charging of the battery is finished; and a control unit configured to receive voltage information for the OCV and resistance information for the resistance from the measuring unit, calculate a voltage deviation between the OCV and a criterion voltage preset for the battery, calculate a resistance deviation between the resistance and a criterion resistance preset for the battery, and diagnose whether degradation of the battery is accelerated based on the voltage deviation and the resistance deviation.